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Compensation Plans (Tables)
12 Months Ended
Dec. 31, 2020
Share-based Payment Arrangement [Abstract]  
Summary of Additional Information Concerning Restricted Stock and Restricted Stock Units
The following table summarizes restricted stock award activity, including performance stock units, for the year ended December 31, 2020 (units in thousands):
 Restricted
Stock
Units
Weighted
Average
Grant Date
Fair Value
Unvested at January 1, 20201,700 $28.56 
Granted693 39.79 
Vested(668)31.30 
Forfeited(42)31.55 
Unvested at December 31, 20201,683 32.02